My first post:
I don't own a Leaf but I've worked in the car business since 1970. Forgive me if this is a familiar topic.
Could you tow a small generator behind the car for the rare times you need to exceed its range? It would probably need about 25kw and weigh about 1000 lbs. It could be used like Zipcars, you'd just rent one for your trip, plug in when you get there.
Is that a stupid or old idea?